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<div class="title">C:/Users/Paulo/Documents/FEUP/EclipseWorkSpace/calgrafos/src/connection.cpp</div>  </div>
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<div class="contents">
<a href="connection_8cpp.html">Ir para a documentação deste ficheiro.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 
<a name="l00002"></a>00002 
<a name="l00008"></a>00008 <span class="preprocessor">#include &quot;<a class="code" href="connection_8h.html">connection.h</a>&quot;</span>
<a name="l00009"></a>00009 
<a name="l00010"></a><a class="code" href="connection_8cpp.html#ac8b3411018d0e5416c08938b796177ab">00010</a> <span class="keywordtype">void</span> <a class="code" href="connection_8cpp.html#ac8b3411018d0e5416c08938b796177ab" title="Código utilizado pelo GraphViewer.">myerror</a>(<span class="keywordtype">string</span> msg) {
<a name="l00011"></a>00011   printf(<span class="stringliteral">&quot;%s\n&quot;</span>, msg.c_str());
<a name="l00012"></a>00012   exit(-1);
<a name="l00013"></a>00013 }
<a name="l00014"></a>00014 
<a name="l00015"></a><a class="code" href="class_connection.html#a9de94289ca6259f94ef6aeba3b134a77">00015</a> <a class="code" href="class_connection.html#a9de94289ca6259f94ef6aeba3b134a77">Connection::Connection</a>() {
<a name="l00016"></a>00016 <span class="preprocessor">#ifdef linux</span>
<a name="l00017"></a>00017 <span class="preprocessor"></span>  <span class="keyword">struct </span>sockaddr_in echoServAddr; <span class="comment">/* Echo server address */</span>
<a name="l00018"></a>00018   <span class="keyword">struct  </span>hostent  *ptrh;
<a name="l00019"></a>00019   
<a name="l00020"></a>00020   <span class="comment">/* Create a reliable, stream socket using TCP */</span>
<a name="l00021"></a>00021   <span class="keywordflow">if</span> ((<a class="code" href="class_connection.html#a50ca7c17a64836ca25a1fe9953cc6cf6">sock</a> = socket(AF_INET, SOCK_STREAM, 0)) &lt; 0)
<a name="l00022"></a>00022     <a class="code" href="connection_8cpp.html#ac8b3411018d0e5416c08938b796177ab" title="Código utilizado pelo GraphViewer.">myerror</a>(<span class="stringliteral">&quot;socket() failed&quot;</span>);
<a name="l00023"></a>00023   
<a name="l00024"></a>00024   <span class="comment">/* Construct the server address structure */</span>
<a name="l00025"></a>00025   memset(&amp;echoServAddr, 0, <span class="keyword">sizeof</span>(echoServAddr));     <span class="comment">/* Zero out structure */</span>
<a name="l00026"></a>00026   echoServAddr.sin_family      = AF_INET;             <span class="comment">/* Internet address family */</span>
<a name="l00027"></a>00027   echoServAddr.sin_port = htons(7772);                <span class="comment">/* Server port */</span>
<a name="l00028"></a>00028 
<a name="l00029"></a>00029   ptrh = gethostbyname(<span class="stringliteral">&quot;localhost&quot;</span>);
<a name="l00030"></a>00030 
<a name="l00031"></a>00031   memcpy(&amp;echoServAddr.sin_addr, ptrh-&gt;h_addr, ptrh-&gt;h_length);
<a name="l00032"></a>00032   
<a name="l00033"></a>00033   <span class="comment">/* Establish the connection to the echo server */</span>
<a name="l00034"></a>00034   <span class="keywordflow">if</span> (connect(<a class="code" href="class_connection.html#a50ca7c17a64836ca25a1fe9953cc6cf6">sock</a>, (<span class="keyword">struct</span> sockaddr *) &amp;echoServAddr, <span class="keyword">sizeof</span>(echoServAddr)) &lt; 0)
<a name="l00035"></a>00035     <a class="code" href="connection_8cpp.html#ac8b3411018d0e5416c08938b796177ab" title="Código utilizado pelo GraphViewer.">myerror</a>(<span class="stringliteral">&quot;connect() failed&quot;</span>);
<a name="l00036"></a>00036 <span class="preprocessor">#else</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span>                WSADATA wsaData;
<a name="l00038"></a>00038     <span class="keywordtype">int</span> iResult = WSAStartup(MAKEWORD(2,2), &amp;wsaData);
<a name="l00039"></a>00039     <span class="keywordflow">if</span> (iResult != NO_ERROR)
<a name="l00040"></a>00040                                 printf(<span class="stringliteral">&quot;Client: Error at WSAStartup().\n&quot;</span>);
<a name="l00041"></a>00041 
<a name="l00042"></a>00042         <span class="comment">// Create a socket.</span>
<a name="l00043"></a>00043     <a class="code" href="class_connection.html#a50ca7c17a64836ca25a1fe9953cc6cf6">sock</a> = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
<a name="l00044"></a>00044     <span class="keywordflow">if</span> (<a class="code" href="class_connection.html#a50ca7c17a64836ca25a1fe9953cc6cf6">sock</a> == INVALID_SOCKET) {
<a name="l00045"></a>00045         printf(<span class="stringliteral">&quot;Client: socket() - Error at socket(): %ld\n&quot;</span>, WSAGetLastError());
<a name="l00046"></a>00046         WSACleanup();
<a name="l00047"></a>00047     }
<a name="l00048"></a>00048 
<a name="l00049"></a>00049     <span class="comment">// Connect to a server.</span>
<a name="l00050"></a>00050     sockaddr_in clientService;
<a name="l00051"></a>00051     clientService.sin_family = AF_INET;
<a name="l00052"></a>00052     <span class="comment">// Just test using the localhost, you can try other IP address</span>
<a name="l00053"></a>00053     clientService.sin_addr.s_addr = inet_addr(<span class="stringliteral">&quot;127.0.0.1&quot;</span>);
<a name="l00054"></a>00054     clientService.sin_port = htons(7772);
<a name="l00055"></a>00055 
<a name="l00056"></a>00056     <span class="keywordflow">if</span> (connect(<a class="code" href="class_connection.html#a50ca7c17a64836ca25a1fe9953cc6cf6">sock</a>, (SOCKADDR*)&amp;clientService, <span class="keyword">sizeof</span>(clientService)) == SOCKET_ERROR) {
<a name="l00057"></a>00057         printf(<span class="stringliteral">&quot;Client: connect() - Failed to connect.\n&quot;</span>);
<a name="l00058"></a>00058         WSACleanup();
<a name="l00059"></a>00059     }
<a name="l00060"></a>00060 <span class="preprocessor">#endif</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span>}
<a name="l00062"></a>00062 
<a name="l00063"></a><a class="code" href="class_connection.html#a4b9f6db1fb42fc9857f829fa0bc52e6e">00063</a> <span class="keywordtype">bool</span> <a class="code" href="class_connection.html#a4b9f6db1fb42fc9857f829fa0bc52e6e">Connection::sendMsg</a>(<span class="keywordtype">string</span> msg) {
<a name="l00064"></a>00064   <span class="keywordtype">int</span> res = send(<a class="code" href="class_connection.html#a50ca7c17a64836ca25a1fe9953cc6cf6">sock</a>, msg.c_str(), msg.size(), 0);
<a name="l00065"></a>00065   <span class="keywordflow">if</span> (res &lt; 0) 
<a name="l00066"></a>00066     <a class="code" href="connection_8cpp.html#ac8b3411018d0e5416c08938b796177ab" title="Código utilizado pelo GraphViewer.">myerror</a>(<span class="stringliteral">&quot;Unable to send&quot;</span>);
<a name="l00067"></a>00067   <span class="keywordtype">string</span> answer = <a class="code" href="class_connection.html#a1df16b436751b686d96c24ca0c498659">readLine</a>();
<a name="l00068"></a>00068   <span class="keywordflow">return</span> answer == <span class="stringliteral">&quot;ok&quot;</span>;
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 
<a name="l00071"></a><a class="code" href="class_connection.html#a1df16b436751b686d96c24ca0c498659">00071</a> <span class="keywordtype">string</span> <a class="code" href="class_connection.html#a1df16b436751b686d96c24ca0c498659">Connection::readLine</a>() {
<a name="l00072"></a>00072   <span class="keywordtype">string</span> msg;  
<a name="l00073"></a>00073   <span class="keywordtype">char</span> ch;
<a name="l00074"></a>00074   <span class="keywordflow">while</span> (<span class="keyword">true</span>) {
<a name="l00075"></a>00075     recv(<a class="code" href="class_connection.html#a50ca7c17a64836ca25a1fe9953cc6cf6">sock</a>, &amp;ch, 1, 0);
<a name="l00076"></a>00076     <span class="keywordflow">if</span> (ch == <span class="charliteral">&#39;\n&#39;</span>)
<a name="l00077"></a>00077       <span class="keywordflow">break</span>;
<a name="l00078"></a>00078     msg.push_back(ch);
<a name="l00079"></a>00079   }
<a name="l00080"></a>00080   <span class="keywordflow">return</span> msg;
<a name="l00081"></a>00081 }
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